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68 lines
3.9 KiB
C
68 lines
3.9 KiB
C
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/*
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* pios_i2c_config.h
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*
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* Created on: May 8, 2011
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* Author: Michael Smith
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*/
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#ifndef PIOS_I2C_CONFIG_H_
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#define PIOS_I2C_CONFIG_H_
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/**
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* Generic I2C configuration for the STM32F2xx
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*/
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#define I2C_CONFIG(_i2c, _scl_gpio, _scl_pin, _sda_gpio, _sda_pin) \
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{ \
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.regs = _i2c, \
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.remap = GPIO_AF_ ## _i2c, \
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.init = { \
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.I2C_ClockSpeed = 400000, /* bits/s */ \
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.I2C_Mode = I2C_Mode_I2C, \
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.I2C_DutyCycle = I2C_DutyCycle_2, \
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.I2C_OwnAddress1 = 0, \
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.I2C_Ack = I2C_Ack_Enable, \
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.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit, \
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}, \
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.transfer_timeout_ms = 50, \
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.scl = { \
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.gpio = _scl_gpio, \
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.init = { \
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.GPIO_Pin = _scl_pin, \
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.GPIO_Mode = GPIO_Mode_AF, \
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.GPIO_Speed = GPIO_Speed_50MHz, \
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.GPIO_OType = GPIO_OType_OD, \
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.GPIO_PuPd = GPIO_PuPd_NOPULL, \
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}, \
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}, \
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.sda = { \
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.gpio = _sda_gpio, \
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.init = { \
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.GPIO_Pin = _sda_pin, \
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.GPIO_Mode = GPIO_Mode_AF, \
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.GPIO_Speed = GPIO_Speed_50MHz, \
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.GPIO_OType = GPIO_OType_OD, \
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.GPIO_PuPd = GPIO_PuPd_NOPULL, \
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}, \
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}, \
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.event = { \
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.flags = 0, /* FIXME: check this */ \
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.init = { \
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.NVIC_IRQChannel = _i2c ## _EV_IRQn, \
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.NVIC_IRQChannelPreemptionPriority = PIOS_IRQ_PRIO_HIGHEST, \
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.NVIC_IRQChannelSubPriority = 0, \
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.NVIC_IRQChannelCmd = ENABLE, \
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}, \
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}, \
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.error = { \
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.flags = 0, /* FIXME: check this */ \
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.init = { \
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.NVIC_IRQChannel = _i2c ## _ER_IRQn, \
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.NVIC_IRQChannelPreemptionPriority = PIOS_IRQ_PRIO_HIGHEST, \
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.NVIC_IRQChannelSubPriority = 0, \
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.NVIC_IRQChannelCmd = ENABLE, \
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}, \
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}, \
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}
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#endif /* PIOS_I2C_CONFIG_H_ */
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